CN101936328A - Four-stroke crankshaft - Google Patents

Four-stroke crankshaft Download PDF

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Publication number
CN101936328A
CN101936328A CN2010102595973A CN201010259597A CN101936328A CN 101936328 A CN101936328 A CN 101936328A CN 2010102595973 A CN2010102595973 A CN 2010102595973A CN 201010259597 A CN201010259597 A CN 201010259597A CN 101936328 A CN101936328 A CN 101936328A
Authority
CN
China
Prior art keywords
crank
bent axle
rod
oil
oil leab
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2010102595973A
Other languages
Chinese (zh)
Inventor
曾现文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Maite Engine Parts Co Ltd
Original Assignee
Qingdao Maite Engine Parts Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Maite Engine Parts Co Ltd filed Critical Qingdao Maite Engine Parts Co Ltd
Priority to CN2010102595973A priority Critical patent/CN101936328A/en
Publication of CN101936328A publication Critical patent/CN101936328A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a four-stroke crankshaft. The four-stroke crankshaft consists of a left crank, a right crank, a connecting rod, bearings arranged on two sides of the left and right cranks and a crank pin for connecting the left and right cranks and the connecting rod, wherein a lubricating oil passage passing through the matched position of the left and right cranks, the crank pin and the connecting rod is formed in the right crank; and a lubricating oil stirring device is arranged on one side close to the connecting rod at the inlet of the lubricating oil passage. A mutually isolated structure of a lubricating cavity and a fuel cavity is formed by match of a piston oil scraper and a double-side sealing device to totally separate gasoline fuel and lubricating engine oil, so engine oil is not combusted and emission of tail gas is greatly reduced. The mutual match of the lubricating oil passage and the lubricating oil stirring device ensures full lubricating effect on the crankshaft component; the crankshaft has a simple structure and low cost; and direct interference fit of the lubricating oil stirring device and the right crank reduces the process requirement, improves the production efficiency and prolongs the service life of the crankshaft.

Description

A kind of four-stroke bent axle
Technical field
The present invention relates to automobile engine crankshaft, is a kind of bent axle that is applied on the four stroke engine specifically, belongs to the auto parts machinery technical field.
Background technique
Internal-combustion engine is provided with the moving parts that the lubricated so that internal-combustion engine of a plurality of needs can long-term work, wherein bent axle is exactly to need parts lubricating in the internal-combustion engine, because match with bent axle its tolerance of associated components and size cooperate to require relatively stricter, surface of contact between the crank pin of bent axle and the corresponding connecting rod that crank pin is connected on the piston separately especially needs to lubricate, otherwise, long-time running, produce frictional heat and wearing and tearing mutually between the parts, cause crank and bent axle generation locking easily, make the internal-combustion engine cisco unity malfunction, in addition, master unit along bent axle self also needs to lubricate, and guarantees that bent axle can rotate freely on its bearing relevant with crankcase.
Along with global climate warms and environmental protection cry surging, government and client are also constantly requiring to use the low emission environmental protection on motor, simultaneously for carrying out the environmental protection standard and the energy-saving and emission-reduction national policy of increasingly stringent, progress and development along with society, the type that discharging waste gas is many will be eliminated certainly, at present, the mode that the bent axle associated components is taked to lubricate mainly is lubricant oil and fuel oil acting in conjunction, but the defective of this mode is: what crank-axle engine burnt is the miscella of fuel gasoline and lubricant oil machine oil, exhaust emissions emits blue smoke, does not reach environmental protection standard, does not also meet the energy-saving and emission-reduction policy of country, and consume unnecessary lubricant oil, wasted the energy.
Summary of the invention
At the deficiency that prior art exists, technical problem to be solved by this invention is a kind of four-stroke bent axle that provide a kind of prerequisite decline low exhaust gas discharging at the effectively lubricating crankshaft component, save oil consumption, motor does not burn machine oil, raising engine efficiency.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of four-stroke bent axle, it is made up of left crank, right crank, connecting rod, the crank pin being located at the bearing of left and right crank both sides and connecting left and right crank, connecting rod, be provided with the oil leab that leads to the position that left and right crank, crank pin and connecting rod three match in the described right crank, the lubricant oil stirring apparatus be set in outer closely connecting rod one side of oil leab inlet.
Above-mentioned four-stroke bent axle, described oil leab comprises axial lubrication road and oil leab radially, the axial lubrication road is arranged in the right crank along axial location, its oil leab outlet is located on the right crank end face, radially oil leab perpendicular to right crank axis and with axial lubrication road vertical connection, described oil leab inlet is located on the right crank external cylindrical surface.
Above-mentioned four-stroke bent axle, described lubricant oil stirring apparatus are middle rectangular, square or the polygonal blade that circular hole is set, and described blade comprises vertical portion branch and fold section, and circular hole is positioned at vertical part; The folded inverted formation fold section of blade two corresponding sides; Described circular hole edge extends an annulus wall along its axial position at least one side, and described this lubricant oil stirring apparatus is by its annulus wall and right crank interference fit.
Above-mentioned four-stroke bent axle, described lubricant oil stirring apparatus are installed on left side, oil leab ingress, and described blade vertically part is tangent with oil leab inlet side wall.
Above-mentioned four-stroke bent axle, described leaf folding part two corresponding sides are parallel to each other.
Above-mentioned four-stroke bent axle, the bearing of described left and right crank both sides is the dual face seals bearing.
The advantage of a kind of four-stroke bent axle of the present invention is:
(1) left and right sides bearing all adopts stuffing box bearing;
(2) right bent axle heavy wool road structure;
(3) right crank has been installed the lubricant oil stirring apparatus.
Above crankshaft structure, scrape cooperating of food tray and dual face seals device by piston, form the structure that a lubricating cavity and burning cavity are isolated mutually, fuel gasoline and lubricant oil machine oil are separated fully, machine oil does not burn, make the exhaust emissions of this four stroke engine reduce greatly, belong to environment-friendly products.Reducing the reduction of discharging environmental protection series product that meet country and advocate energetically in the world on the exhaust emissions, cooperatively interact by oil leab and lubricant oil stirring apparatus, under the situation that reduces discharging, guaranteed sufficient lubrication effect to crankshaft component, this crankshaft structure is simple, with low cost, the direct and right crank interference fit of lubricant oil stirring apparatus has reduced technological requirement, improve manufacturing efficiency, strengthened its working life.
Description of drawings
Fig. 1 is the structural representation of a kind of four-stroke bent axle of the present invention;
Fig. 2 is the structural representation of lubricant oil stirring apparatus in the four-stroke bent axle of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments the present invention is described in further details;
As shown in Figure 1, structural representation for four-stroke bent axle of the present invention, a kind of four-stroke bent axle, it is made up of left crank 1, right crank 2, connecting rod 3, the crank pin 4 being located at the bearing 31 of left crank 1, right crank 2 both sides and connecting left and right crank (1,2), connecting rod 3, be provided with the oil leab 5 that leads to the position that left crank 1, right crank 2, crank pin 4 and connecting rod 3 threes match in the described right crank 2, lubricant oil stirring apparatus 6 be set in oil leab inlet 54 outer closely connecting rod 3 one sides.
Above-mentioned four-stroke bent axle, described oil leab 5 comprises axial lubrication road 51 and oil leab 52 radially, axial lubrication road 51 is arranged at right crank 2 inside and is set to an oval hole shape along axial location, its oil leab outlet 53 is located on right crank 2 and the end face that connecting rod 3 matches, radially oil leab 52 perpendicular to the axis of right crank 2 and with axial lubrication road 51 vertical connections, described oil leab inlet 54 is located on right crank 2 external cylindrical surfaces.
Above-mentioned four-stroke bent axle, described lubricant oil stirring apparatus 6 are rectangular, square or the polygonal blade that circular hole 61 is set in the middle of, and described blade comprises that the vertical portion divides 62 and fold section 63, and circular hole 61 is positioned at vertical part 62 centers; The folded inverted formation fold section 63 of blade two corresponding sides; The edge of described circular hole 61 extends an annulus wall 64 along its axial position at least one side, and described this lubricant oil stirring apparatus 6 is by its annulus wall 64 and right crank 2 interference fit.
Above-mentioned four-stroke bent axle, described lubricant oil stirring apparatus 6 are installed on oil leab 54 left sides that enter the mouth, and the vertical part 62 of described blade and oil leab 54 1 sidewalls that enter the mouth are tangent.
Above-mentioned four-stroke bent axle, 63 liang of corresponding sides of described leaf folding part are parallel to each other.
Above-mentioned four-stroke bent axle, for improving this lubricating cavity and combustion chamber isolated degree, reach the effect of energy-saving and emission-reduction, four-stroke bent axle of the present invention left side crank 1, right crank 2 both sides used bearing 3 be the dual face seals bearing.
Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present invention, the variation of making, remodeling, interpolation or replacement all should belong to protection scope of the present invention.

Claims (6)

1. four-stroke bent axle, it is made up of left crank, right crank, connecting rod, the crank pin being located at the bearing of left and right crank both sides and connecting left and right crank, connecting rod, it is characterized in that: be provided with the oil leab that leads to the position that left and right crank, crank pin and connecting rod three match in the described right crank, the lubricant oil stirring apparatus be set in outer closely connecting rod one side of oil leab inlet.
2. four-stroke bent axle according to claim 1, it is characterized in that: described oil leab comprises axial lubrication road and oil leab radially, the axial lubrication road is arranged in the right crank along axial location, its oil leab outlet is located on the right crank end face, radially oil leab perpendicular to right crank axis and with axial lubrication road vertical connection, described oil leab inlet is located on the right crank external cylindrical surface.
3. four-stroke bent axle according to claim 2 is characterized in that: described lubricant oil stirring apparatus is middle rectangular, square or the polygonal blade that circular hole is set, and described blade comprises vertical portion branch and fold section, and circular hole is positioned at vertical part; The folded inverted formation fold section of blade two corresponding sides; Described circular hole edge extends an annulus wall along its axial position at least one side, and described this lubricant oil stirring apparatus is by its annulus wall and right crank interference fit.
4. four-stroke bent axle according to claim 3 is characterized in that: described lubricant oil stirring apparatus is installed on left side, oil leab ingress, and described blade vertically part is tangent with oil leab inlet side wall.
5. four-stroke bent axle according to claim 4 is characterized in that: described leaf folding part two corresponding sides are parallel to each other.
6. four-stroke bent axle according to claim 5 is characterized in that: the bearing of described left and right crank both sides is the dual face seals bearing.
CN2010102595973A 2010-08-23 2010-08-23 Four-stroke crankshaft Pending CN101936328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010102595973A CN101936328A (en) 2010-08-23 2010-08-23 Four-stroke crankshaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010102595973A CN101936328A (en) 2010-08-23 2010-08-23 Four-stroke crankshaft

Publications (1)

Publication Number Publication Date
CN101936328A true CN101936328A (en) 2011-01-05

Family

ID=43389837

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010102595973A Pending CN101936328A (en) 2010-08-23 2010-08-23 Four-stroke crankshaft

Country Status (1)

Country Link
CN (1) CN101936328A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102865344A (en) * 2012-08-21 2013-01-09 青岛迈特园林机械零部件有限公司 Crank connecting rod assembly for two-stroke engine and method for processing threads on crank
CN105090231A (en) * 2014-05-07 2015-11-25 雅马哈发动机株式会社 Internal combustion engine and straddle-type vehicle equipped with engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102865344A (en) * 2012-08-21 2013-01-09 青岛迈特园林机械零部件有限公司 Crank connecting rod assembly for two-stroke engine and method for processing threads on crank
CN105090231A (en) * 2014-05-07 2015-11-25 雅马哈发动机株式会社 Internal combustion engine and straddle-type vehicle equipped with engine
CN105090231B (en) * 2014-05-07 2017-09-22 雅马哈发动机株式会社 Internal combustion engine and the riding vehicle for possessing the internal combustion engine

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Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20110105

C02 Deemed withdrawal of patent application after publication (patent law 2001)